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High regioselectivity in the heterocyclization of beta-oxonitriles to 4-oxothiazolidines: X-ray structure proof
(Pergamon-Elsevier Science Ltd, Oxford, 2003)
Base-catalyzed reactions of beta-oxonitriles 1 with diethyl mercaptosuccinate favour heterocyclization to afford 2-alkylidene-4-oxothiazolidines 3, rather than 2-alkylidene-4-oxo-1,3-thiazinanes 4. The observed regioselectivity ...
Type-I hypersensitivity to ceftriaxone and cross-reactivity with cefalexin and ampicillin
(Blackwell Munksgaard, Copenhagen, 2003)
Hyperatomarin, an antibacterial prenylated phloroglucinol from Hypericum atomarium ssp degenii
(Amer Chemical Soc, Washington, 2003)
shown by quantitative H-1 NMR measurements, a lipophilic extract of the aerial parts of Hypericum atomarium ssp. degenii contained a high percentage (3.1% per weight of dried plant material) of a prenylated phloroglucinol ...